| الوصف: |
(A) ΔρENVs for 100 words [in their 3 degraded forms and for high- and low-frequency bands (<1.5 kHz (left, A ) and >1.5 kHz (right, A)] were calculated using AN responses to “Natural” speech (i.e., in quiet) presented without the MOC reflex as the control template to compute values of ρENV AN , i.e., Nat ANonly versus Degraded ANonly . ΔρENVs for all manipulations in both low and high-frequency bands followed the same stimulus-dependent trends as in Fig 2 . (mean ΔρENV for Voc8 for freqs <1.5 kHz = +3.69 ± 0.30%, [Z(99) = 5.68, p < 0.001, r = 0.57]; mean ΔρENV for Voc8 for freqs >1.5 kHz = + 8.08 ± 0.36%, [Z (99) = 8.6, p < 0.0001, r = 0.87]; mean ΔρENV for BN5 for freqs <1.5 kHz = −9.20 ± 0.66, [Z(99) = −8.68, p < 0.0001, r = 0.87]; mean ΔρENV for BN5 for freqs >1.5 kHz = −3.24 ± 0.30%, [Z(99) = −7.84, p < 0.001, r = 0.57]; mean ΔρENV for SSN3 for freqs <1.5 kHz = −9.09 ± 0.70, [Z (99) = −8.68, p < 0.0001, r = 0.87]; mean ΔρENV for SSN3 >1.5 kHz = −5.60 ± 0.34, [Z (99) = −8.68, p < 0.0001, r = 0.87]). ΔρENVs for Voc8 stimuli (pink circles, left, A) were exclusively positive in the high-frequency band with the largest benefits observed for noise-vocoded tokens with the lowest ρENV AN values, as observed in Fig 2E . In addition, the most negative ΔρENVs for BN5 and SSN3 stimuli were observed for the lowest values of ρENV AN . (B) Comparing ΔρENVs calculated using Nat ANonly and Nat AN+MOC as a control template for ρENV AN at high frequencies (>1.5 kHz). The mean improvement in envelope encoding for Voc8 stimuli was larger after calculating ρENV AN with the new Nat ANonly control template ([Z(99) = −4.6, p < 0.001, r = 0.47]) (left column, B). Similarly for masked stimuli (BN5 (middle, B) and SSN3 (right, B)), the new control template for ρENV AN led to an increase in the impairment to envelope encoding with the MOC reflex (BN5:[Z(99) = −6.50, p < 0.001, r = 0.65]; SSN3:[Z(99) = −7.09, p < 0.01, r = 0.71]) (middle and right columns, B). The underlying data can ... |